Answer: flatout

AnswerCrossword Clue
FLATOUTDown right
FLATOUTAt maximum speed
FLATOUTWithout hesitation
FLATOUTDownright
FLATOUTMoving at top speed
FLATOUTBluntly and directly: Dial.
FLATOUTComplete and direct, as a denial
FLATOUTTotally